Electric circuit board



FIG. 1 is a top perspective view of a first embodiment of an electric circuit board of the present invention;

FIG. 2 is a top view thereof;

FIG. 3 is a top perspective view of a second embodiment of an electric circuit board of the present invention;

FIG. 4 is a top view thereof;

FIG. 5 is a top perspective view of a third embodiment of an electric circuit board of the present invention; and,

FIG. 6 is a top view thereof.

The ornamental design which is claimed is shown in solid lines in the drawings. Any broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. 

We claim the ornamental design for an electric circuit board, as shown and described. 